Bell 280 SRV Helmet Shield for M2, M4, and BR1 (SA05)

Bell introduced the SRV friction-lock system as a rolling change in 2005-06 on the SA2005 M4 and BR-1 helmets. Later SA05 versions of these models have the SRV system, but some of the early SA05 helmets have the original Bell Kam-Lok Shield detent system. The SRV shield has a smooth curved slot in front of the pivot. The Kam-Lok shield has a slot with three notches and takes a different shield.